Has anyone had a disk fail in their PVR80, and moreover replaced it to get it working? My PVR80 seems to fail on the Disk Check Routine, says "DISK CHECK" then goes straight into standby. On the rare occasions that it does start, however, it will display for only a few seconds. Then on the next power cycle it will fail the Disk Check routine again? I'm assuming the HDD has failed, but it'd be good if someone could confirm this?